Machine for making certain rubber goods



June 29, 1943. F. .L MAYWALD, JR

MACHINE FOR MAKING CERTAIN RUBBER GOODS Filed-sept. 25, 1940 aSheets-sheet 1 ATTORNEYS F.1J. MAYwALuJR 2,322,766 MACHINE FOR MAKINGCERTAIN RUBBER GOODS Filed sept. 25, 1940 s sheets-sheet V2 V June 29,1943.

` I lNvENToR. fkc/er/c/J Ala BY AToRNEYS 7 A A 6 Y a /9 l I *llllllllHHI l (9 A I F G. 6 l

June 29, 1943 F. J. MAYWALD, .mY M 2,322,766 MACHINE FOR MAKING CERTAINRUBBER GOODS l Filed sept. 25, 1940 3 sheets-sheet s i lllll INVENTOR.

ATTORNEYS tween the upright and the inverted positions.

' line I-I of Fig. 3;

Patented June 29, 1943 Frederick J. Maywald, Jr., Rutherford, N. J., as-

signor to Allied Latex Corporation, East Newark, N. J., a corporation ofNew Jersey Application september 25, 1940, serial No. 358,231

` 6 Claims.

a machine in which the forms are turnably connected to blocks which areconnected to an endless conveyor, said machine having-guide means whichare Vshaped to automatically turn said blocks relative to thelongitudinal axis of the conveyor, in order to maintain the formsupright, or inverted, or horizontal, or in any position be- Anotherobject of the invention is to provide a machine in which each form yisprovided with .a single roller .which turns in unisonwith the respectiveform, thus eliminating idlei` rolls, and holding each form reliably withits axis parallel to a predetermined line, during the beading operation.

(ci. 19a-137) Another object of the invention is to moisten the endportions of the rubber objects which are subjected to the action ofthebeading mechanIsm, prior to the perfomance oi' the beading operation, inorder to facilitate the proper and uniform operation of the beadingdevices.

Other objects of 4my invention will be set forth in the followingdescription and drawings which illustrate certain preferred embodiments,it being explain the same without limiting it in any manner.

Flg."1 is a top plan view of a part of the ma- I chine.

Fig. 2 is a side elevation of Fig. l.

said companion idler sheave (not shown).

vided-with a sprocket 8, which is shown in detail in Figs. 5 and 6. Theflange of the sprocket 8 is provided with a circumferential recess, thusproviding spaced top and bottom walls which are cut so as to providesuperposed pairs of teeth 9. An endless conveyor is driven by means ofthe sprocket 8. In this embodiment, the endless conveyor is in the formof a chain which consists of pivoted links. This chain is shown indetail in Fig. 4. One `of its ends meshes with anidler sheave which issimilar to sprocket 8. The conf veyor has straight runs between sheave 8and 'I'his chain comprises a series of spaced blocks I0, each of whichis of hollow transverse square crosssection. The square cross-section ofblock I 0 is shown in Fig. 3. Each of these blocks I0 is provided with acentral longitudinal cylindrical bore. A yoke II is associated with eachblock I8. Each yoke I I is connected to a cylindrical bearing member I2,which is located turnably in the central cylindrical bore of therespective block I8,.th1s being the left-hand block in Fig. 4. Eachbearing member I2 is provided with a projection Il which is pivotallyconnected to the arms of the adjacent yoke I I, by means of a pivot'pinI8, whose inner end is threaded. This inner end engages the tappedopening of the corresponding arm-of the yoke I l. Therefore each yoke isfree to turn around the longitudinal axis of the bore of the respectiveblock I8, and each yoke is free to turn about the respective extensionIl, relative to a transverse axis which is perpendicular to saidlongitudinal axis. YEach block I0 flts fairly snug- Fig. 3 Is asectional view, partially in elevation.

Fig. 4 is another detail sectional view on the Fig. 5 is an enlargedplan view, partially in section, of the driving sprocket which is shownat the left-hand side of Fig. 1.

Fig. 6 ls a sectional view on the line 6--6 of Fig. 5. o

As shown in Fig. 1 a motor Mr which may be anelectric motor of anysuitable type, is connected by means of a conventional flexible couplingI to a shaft 2. The horizontal shaft 2 is connected to a vertical shaft3, by means of conventional reduction gearing which is located in a gearbox 4. The shaft 3 is provided with a gear 5, which meshes with a largergear 6 on the shaft 1. At its upper end, the vertical shaft 'I is prolybetween the head of one adjacent yoke I I, and the arms of the otheradjacent yoke, so that each block I0 is held against substantiallongitudinal movement relative to the respective bearing member I2. Asshown in Fig. 3, each block III is provided with an integral lateralextension I6. As also shown in Fig. 3, each extension IB is providedwith a recess in which the spindle shank I1 of a form-support is helddetachably by means of a clamping screw I8. A sleeve I9 Vis turnablymounted upon each shaft or spindle I1. 'I'he sleeve I9 is held againstlongitudinal movement,

relative to its spindle I1, by means of collars 20` which are clamped tothe spindle I1 by means of clamping screws 2|. `A sleeve 22, which isprovided with an integral roll 23, is mounted upon the sleeve I9. Thesleeve 22 and ro1l23 are made of resilient vulcanized rubber or othersuitable resilient material. The ends of the sleeve v22 are located`between the washers 24 which are'xed, either permanently or detachably,to the sleeve tively connected by means of screws 39.

I9. The .form F is made of glass or other suitable material and isconnected to the rubber sleeve 22, by means of a drive fit or in anyother suitable manner.

An additional sleeve 25, which is alsomade of resilient vulcanizedrubber, is connected to sleeve4 I9 by cementing or the like. A washer 26may be permanently or detachably connected to the sleeve i9, in order toprevent the sleeve 25 from shifting relative to the sleeve i9, in onedirection.

. The interior cylindrical wall of the form F also iits snugly upon thesleeve 25, which is also provided with longitudinal ridges.

At the sprocket t, the blocks i6 are located between thepairs of teeth 6of said sprocket. In effect, said blocks i6 mesh with the pairs oi teeth6, so that sprocket 6 drives the. endless chain conveyor.

'Ihe blocks i@ move slidably between stationary rail members 35 and ltd,which are shown in cross-section in Fig. 3. These rail members 55 and i6are supported at spaced intervals by means of angle irons d?, to whichbars 8 are respec- The angle irons ill are connected to the iixed frame56 of the machine by means of screws 5i. Each supporting member d1 and asuppiementai bar 48 forms in eiiect a U-shaped supporting member. Therail members t and 4S are held between the angle irons di and bars 48 byscrews 52 and 53. A spacing bar 5t is provided between the rail member66 and the adjacent portion of the member ill. Another spacing bar 55 isprovided between each bar 43, and the adjacent portion` of the railmember d5. These spacing bars 54 and 55 are welded or otherwise securedrespectively to the members 45 and M5. The screws 52 and 53 respectivelypass through tapped holes ofv the spacing members 56 and 5%. The members45 and d6 are provided in sections, and a supporting member lil,together with its bar to, is provided at the junction between twosuccessive sections. The spacing bars 54 and 55 are welded A to thesuccessive rail members l5 and d at each junction, as indicated at W inFig. 4. The projections it of the blocks it extend through the openingsbetween the `adjacent anges of the rail members Q5 and 46. The'bars 48may be omitted at some of the junctions of the rail members 't5 and 46,and the rail members may be connectedA motor ilMa. The direction of thecurrent ofl heated air in the tunnel H13 may be in the same direction asthe movement of the forms; or counter to the direction of the movementof the' forms. is to drive off traces of moisture from the beads, and toensure the complete vulcanization of the bodies and the beads of therubber objects, so that the beads are vulcanized integrally to thebodies.

The axes of the forms are maintained vertical in the heating tunnel |63.The temperature in the heating tunnel ID3 may be about 300 F.-

' AThe rail members Q5 and 46 have a common The functionI of thisheating tunnel W3 and straight longitudinal axis. The endless-conveyorhas two straight runs and two curved endruns. The rail members 45 and 46are located only at the straight runs of the endless conveyor.

The blocks I6 may be of any suitable noncircular or polygonal contour,so as to provide large bearing surfaces which slidably abut thecorresponding inner surfaces of the rail members 45 and 4B. Therefore,while it is preferable to provide the outer surfaces of the blocks i@with square cross-sections, the invention`is not lim:v

'ited thereto.

The members d5 kand 45 therefore constitute a guide through which astraight run of the endless conveyor is actuated. The inner surface ofsaid guide has a plurality of planar faces. Blocks Hl are form supports,to which the forms F are turnably connected, and said forms F extendlaterally relative to said guide. Said guide is twisted relative to itsstraight longitudinal axis so as to vary the inclinations between theaxes of said forms, and a predetermined reference plane. This plane maybethe horizontal plane or the vertical plane. claims, to the polygonalinner surfaces of the guide, I include any non-circular shape.Therefore, if the inner surface of the guide has only a single planarsurface, this is within the scope of the invention.

In order to economize space the axes of thel forms are turned relativeto a predetermined reference plane, in both straight runs of the endlessconveyor.

along a single straight run of the endless con- VSyOI.

`Iihe members iB constitute means for connectaxis, since said slot isshapedl in accordance with the tilting of the axes of the forms,relative to the predetermined reference plane. bers it have asubstantial clearance in the slot of the guide, since the tilting of theaxes of the forms is produced primarily by the snug sliding iit oftheplanar face or faces ofthe block it, against the planar face or facesof the interior surface oi? the guide.

It will be noted that while the axes of the iorms are tilted, the blocksIB are not turned relative to the respective adjacent portions of theinner surface of the guide.

For convenience the guide is designated as being twisted. In actualpractice the rail members 45 and 66 are cast or otherwise made initiallyin their iinai form, save'thatthey are machined or otherwise iinished,subsequent to the casting.

Whenever I refer to "beading in the descrip# tion or claims- I refer toit generally as the i'orma- Standard steel tubing which is orrectangular or square or other suitable polygonal cross-section Thissteel tubing is cut longitudinal, in order to separate the same intolongitudinal halves. The edges can then be twisted by cold working.These sections of the steel tubing are preferably twisted separatelyinto the desired shape. Fig. 2 shows how the forms are passed through adrying tunnel 62 which has an enlargement in which a blower 59a islocated. Said blower is operated by an electric motor 63a.-

Whenever I refer, in the The invention is not limited thereto, as themembers d5 and Micah be located wholly The mem- 'and omissions can bemade without departing from its spirit.

I claim:

l. A machine of the class describedcompris l straight longitudinal axisand through which a i straightl run of said endless conveyor is actuatedby said drive means, said guide having a longitudinal slot, the innersurface of said guide having a polygonal cross-section which has planarfaces, said endless conveyor having form-supports which are connected tosaid endless conveyor, said.

form-supports fitting substantially snugly and slidably against theinner surface of said guide. said form-'supports having forms turnablyconnected thereto by means which extend through said slot, said guidebeing twisted relative to its straight longitudinal axis so as to varythe angles between the longitudinal axes of said forms'and thehorizontal plane during the movement of said endless conveyor withinsaid guide.

2. A machine of the class described, comprising an endless conveyorwhich has a straight run, means adapted to support and to actuate saidendless conveyor so that said straight' run is moved parallel to itsstraight longitudinal axis, a guide having a straight longitudinal axisand throughy which said straight run is actuated, said guide havingaslot and having a non-circular inner surface, form-supports connected tosaid endless conveyor and fitting against the inner surface of saidguide so as to prevent said formsupports from turning around saidlongitudinal axis relative to the respective abutting portions of theinner surface of said guide, said guide having a longitudinal slot, saidform-supports having extensions which extend laterally through said slotof the guide, forms external to said guide and connected turnably tosaid extensions so that each form can turn around its longitudinal axis,said inner surface of the guide being twisted relative to saidlongitudinal axis so as to tilt the axes of the forms relative to thehorizontal plane.

3. A machine of the class described, comprising an endless conveyorwhich has a straight run, means adapted to support and to actuate saidendless conveyor so that said. straight run is moved parallel to itsstraight longitudinal axis, a guide having a straight longitudinal axisand through which said straight run is actuated, said guide having aslot and having a non-circular inner surface which has at least oneplanar face, form-supports connected to said endlessconveyor and fittingagainst the inner surface of said guide so as to prevent saidform-supports from turning around said longitudinal axis relative to therespective abutting portions of the inner surface of said guide, saidguide having a longitudinal slot, said form-supports having extensionswhich extend laterally through said slot of theguide, each saidextension having a spindle rigidly connected thereto, each said spindlehaving a form mounted on said spindle, each form beingturnable aroundits longitudinal axis, said inner surface of the guide being twisted.relative ltosaid longitudinal axis'so`that said planar surface makesdifferent angles with the horizontal plane along the length of saidguide. A

4. A machine of the class described, comprising an endless conveyorwhich has a straight run, means adapted to support and to actuate saidendless conveyor so that said straight run is moved parallel to itsstraight longitudinal axis, a guide having a straight longitudinal axisand through which said straight run is actuated, said guide comprisingangular rail members and` means adapted to hold said rail members inassembled relation, said rail members having adjacent flanges which arespaced from each other so as to provide a longitudinal slot in saidguide, the inner cross-section of said rail members being substantiallya rectangle which is open at said longitudinal slot, form-supportsconnected to said endless conveyor, said form-supports having outersurfaces which fit snugly and slidable against the inner surfaces ofsaid rail members, said form-supports having extensions which extendlaterally through said slot of the guide, forms external to said guid'and connected turnably to said extensions so that each form can turnaround its longitudinal axis, each inner surface of each rail memberbeing twisted relative to said longituldinal axis so as to makedifferent angles withv the horizontal plane.

5. A machine of the class described, compris- A ing an endless conveyorwhich has a straight run and curved end runs, said endless conveyorcomprising a series of spaced form-supports, each form-support having anaxial through-andthrough cylindrical bore, yoke members respectivelylocated intermediate said form-supports, each yoke member having a`cylindrical spindle 4portion which is located 'in the .cylindrical boreof the respective form-support so that the formsupport is turnable`around the longitudinal axis of said bore, each yoke member having apair of spaced arms which are located at one side of the respectiveform-support, each yoke member having a single arm located at the otherside of .the respective form-support, each said single arm being locatedbetween and being pivotally connected to the spaced arms of the nextadjacent yoke member so that adjacent yoke members are connected to eachotherl to turn around an axis whichv is perpendicular to thelongitudinal connected to said form-supports so that each form isturnable around its own axis.

6. A machine of the class described, comprising an endless conveyorWhichhas a straightrun and curved end runs, said endless conveyorcomprising a series of spaced form-supports, each form-support having anaxial through-andthrough cylindrical bore, yoke members respectivelylocated intermediate said form-supports, each yoke member having acylindrical spindle portion which is located in the cylindrical bore ofthe respective form-support so that the form-v support is turnablearound the longitudinal axis of said bore, each yoke member having apair of spaced arms which arelocated at one side of the respectiveform-support, each yoke member having a single arm located at the otherside of the respective form-support, each said single arm being 'locatedbetween and being pivotally connected to the spaced arms of the nextadjacent yoke member so that adjacent yoke members are connected to eachother to turn around an axis which is perpendicular to the longitudinalaxis of the bore, the curved end runs of said endless conveyor beingsupported on turnable sheaves, one of said sheaves having a recessedperiphery which is shaped to kadmit said yokes and to suD- port saidform-supports, said periphery also having teeth which are shaped tointermesh'with said spaced form-supports, .a guide having a straightlongitudinal axis and through which a straight run of said endlessconveyor is adapted l0 to be actuated, said guide having a longitudinalslot. said form-supports having eixtensions which project laterallythrough said longitudinal slot, forms ,external to said guide and'tumably connected to said extensions so that each form is

